| Primary satellite | Secondary satellite |
| Name | Cosmos 1400 Rocket | CZ-11 R/B |
| Spacetrack catalog number | 13403 | 41847 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Mar 05 21:37 | 2021 Mar 05 17:49 |
| Time of closest approach (UTC) | 2021 Jan 21 20:51:20.328 |
| Minimum distance | 16.072 km |
| Height difference | 1.395 km |
| Relative speed | 13.463 km/s |
| Angle between velocity vectors | 123° |
| Geographic position | 80.1°S, 66.6°E |
| Height | 549 km |
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